Right on, McG. Drama is what made the songs memorable enough to have become traditional. But let us not forget that love songs contain their own brand of happiness. My personal favorite, for example, is Seven Daffodils. The happy bit in it is only implied. We presume that what is offered is deemed sufficient and that the singer and the intended recipient of the moonbeams and pillow of the pillow of piney boughs live happily ever after.